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/**
* @lib Beast
* @ver 0.37.0
* @url github.yandex-team.ru/kovchiy/beast
*/
'use strict';
;(function () {
if (typeof window !== 'undefined') {
// Polyfill for window.CustomEvent in IE
if (typeof window.CustomEvent !== 'function') {
window.CustomEvent = function (event, params) {
params = params || {bubbles: false, cancelable: false, detail: undefined}
var e = document.createEvent('CustomEvent')
e.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
return e
}
window.CustomEvent.prototype = window.Event.prototype
}
window.Beast = {}
document.addEventListener('DOMContentLoaded', function () {
Beast.init()
})
} else {
global.Beast = {}
module.exports = Beast
}
/*
* Common vars
*/
var Declaration = {} // Declarations from Bease.decl()
var DeclarationFinished = false // Flag turns true after the first Beast.node() call
var HttpRequestQueue = [] // Queue of required bml-files with link tag
var CssLinksToLoad = 0 // Num of <link rel="stylesheet"> in the <head>
var BeastIsReady = false // If all styles and scripts are loaded
var OnBeastReadyCallbacks = [] // Functions to call when sources are ready
var ReStartBML = /<[a-z][^>]*\/?>/i // matches start of BML substring
var ReDoubleQuote = /"/g // matches "-symbols
var ReBackslash = /\\/g // matches \-symbols
var ReLessThen = /</g // matches <-symbols
var ReMoreThen = />/g // matches >-symbols
var ReNL = /\n/g // matches \n-symbols
var ReCamelCase = /([a-z])([A-Z])/g // matches camelCase pairs
var ReStylePairSplit = /:\s?/ // matches :-separation in style DOM-attribute
// Declaration properties that can't belong to user
var ReservedDeclarationProperies = {
inherits:1,
implementWith:1,
expand:1,
mod:1,
mix:1,
param:1,
domInit:1,
domAttr:1,
on:1,
onWin:1,
onMod:1,
onAttach:1,
onRemove:1,
tag:1,
noElems:1,
state:1,
final:1,
// 2 means not to inherit this field
abstract:2,
finalMod:2,
__userMethods:2,
__commonExpand:2,
__commonDomInit:2,
__flattenInherits:2,
__finalMod:2,
}
// CSS-properties measured in px commonly
var CssPxProperty = {
height:1,
width:1,
left:1,
right:1,
bottom:1,
top:1,
'line-height':1,
'font-size':1,
}
// Single HTML-tags
var SingleTag = {
area:1,
base:1,
br:1,
col:1,
command:1,
embed:1,
hr:1,
img:1,
input:1,
keygen:1,
link:1,
meta:1,
param:1,
source:1,
wbr:1,
}
// Text output helpers
function escapeDoubleQuotes (string) {
return string.replace(ReBackslash, '\\\\').replace(ReDoubleQuote, '\\"').replace(ReNL, '\\n')
}
function escapeHtmlTags (string) {
return string.replace(ReLessThen, '<').replace(ReMoreThen, '>')
}
function camelCaseToDash (string) {
return string.replace(ReCamelCase, '$1-$2').toLowerCase()
}
function stringifyObject (ctx) {
if (Array.isArray(ctx)) {
var string = '['
for (var i = 0, ii = ctx.length; i < ii; i++) {
string += stringifyObject(ctx[i]) + ','
}
string = string.slice(0,-1)
string += ']'
return string
}
else if (typeof ctx === 'object') {
var string = '{'
for (var key in ctx) {
if (ctx[key] !== undefined) {
string += '"' + key + '":' + stringifyObject(ctx[key]) + ','
}
}
if (string.length !== 1) {
string = string.slice(0, -1)
}
string += '}'
return string
}
else if (typeof ctx === 'string') {
return '"' + escapeDoubleQuotes(ctx) + '"'
}
else if (typeof ctx === 'function' && ctx.beastDeclPath !== undefined) {
return ctx.beastDeclPath
}
else {
return ctx.toString()
}
}
function objectIsEmpty (object) {
for (var key in object) return false
return true
}
function cloneObject (ctx) {
if (Array.isArray(ctx)) {
var array = []
for (var i = 0, ii = ctx.length; i < ii; i++) {
array.push(
cloneObject(ctx[i])
)
}
return array
}
else if (typeof ctx === 'object' && ctx !== null) {
var object = {}
for (var key in ctx) {
object[key] = cloneObject(ctx[key])
}
return object
}
else {
return ctx
}
}
/**
* Public Beast properties
*/
Beast.declaration = Declaration
/**
* Initialize Beast
*/
Beast.init = function () {
var links = document.getElementsByTagName('link')
var bmlLinks = []
for (var i = 0, ii = links.length; i < ii; i++) {
var link = links[i]
if (link.type === 'bml' || link.rel === 'bml') {
RequireModule(link.href)
bmlLinks.push(link)
}
if (link.rel === 'stylesheet') {
CssLinksToLoad++
link.onload = link.onerror = function () {
CheckIfBeastIsReady()
}
}
}
for (var i = 0, ii = bmlLinks.length; i < ii; i++) {
bmlLinks[i].parentNode.removeChild(bmlLinks[i])
}
CheckIfBeastIsReady()
}
/**
* Require declaration script
*
* @url string Path to script file
*/
function RequireModule (url) {
var xhr = new (XMLHttpRequest || ActiveXObject)('MSXML2.XMLHTTP.3.0')
xhr.open('GET', url)
xhr.onreadystatechange = function () {
if (this.readyState === 4 && this.status === 200) {
CheckIfBeastIsReady()
}
}
HttpRequestQueue.push(xhr)
xhr.send()
}
/**
* Checks if all <link> are loaded
*/
function CheckIfBeastIsReady () {
if (BeastIsReady) return
var isReady = true
for (var i = 0, ii = HttpRequestQueue.length; i < ii; i++) {
var xhr = HttpRequestQueue[i]
if (xhr.readyState !== 4 || xhr.status !== 200) {
isReady = false
}
}
if (document.styleSheets.length < CssLinksToLoad) {
isReady = false
}
if (isReady) {
for (var i = 0, ii = HttpRequestQueue.length; i < ii; i++) {
EvalBml(
HttpRequestQueue[i].responseText
)
}
HttpRequestQueue = []
ProcessBmlScripts()
BeastIsReady = true
for (var i = 0, ii = OnBeastReadyCallbacks.length; i < ii; i++) {
OnBeastReadyCallbacks[i]()
}
}
}
/**
* Converts <script type="bml"/> tag to Beast::evalBml() method
*/
function ProcessBmlScripts () {
var scripts = document.getElementsByTagName('script')
for (var i = 0, ii = scripts.length; i < ii; i++) {
var script = scripts[i]
if (script === undefined) {
continue
}
var text = script.text
if (script.type === 'bml' && text !== '') {
EvalBml(text)
}
}
}
/**
* Parses and attaches declaration to <head>-node.
* If there's only XML inside, appends node to document.body.
*
* @text string Text to parse and attach
*/
function EvalBml (text) {
var rootNode = eval(Beast.parseBML(text))
rootNode.render(
/^[\s\n]*</.test(text) ? document.body : document.documentElement
)
}
/**
* Initialize DOM: assign DOM-nodes to BemNodes
* @domNode DOMElement Node to start with
*/
Beast.domInit = function (domNode, isInnerCall, parentBemNode, parentBlock) {
// No more Beast.decl() after the first Beast.domInit() call
if (!DeclarationFinished) {
DeclarationFinished = true
CompileDeclarations()
}
if (domNode === undefined) {
return false
}
// ELEMENT_NODE
else if (domNode.nodeType === 1) {
var nodeName = domNode.getAttribute('data-node-name')
if (nodeName !== null) {
// BemNode
var bemNode = isInnerCall ? Beast.node(nodeName, {__context: parentBlock}) : Beast.node(nodeName)
var stringToEval = ''
var implementedNodeName = ''
// Assign attributes
for (var i = 0, ii = domNode.attributes.length, name, value; i < ii; i++) {
name = domNode.attributes[i].name
value = domNode.attributes[i].value
// Parse style to css object
if (name === 'style') {
var stylePairs = value.split(';')
for (var j = 0, jj = stylePairs.length, stylePair; j < jj; j++) {
stylePair = stylePairs[j].split(ReStylePairSplit)
bemNode.css(stylePair[0], stylePair[1])
}
}
// Restore encoded objects
else if (name === 'data-event-handlers') {
stringToEval += ';bemNode._domNodeEventHandlers = ' + decodeURIComponent(value)
}
else if (name === 'data-window-event-handlers') {
stringToEval += ';bemNode._windowEventHandlers = ' + decodeURIComponent(value)
}
else if (name === 'data-mod-handlers') {
stringToEval += ';bemNode._modHandlers = ' + decodeURIComponent(value)
}
else if (name === 'data-dom-init-handlers') {
stringToEval += ';bemNode._domInitHandlers = ' + decodeURIComponent(value)
}
else if (name === 'data-mod') {
stringToEval += ';bemNode._mod = ' + decodeURIComponent(value)
}
else if (name === 'data-param') {
stringToEval += ';bemNode._param = ' + decodeURIComponent(value)
}
else if (name === 'data-implemented-node-name') {
implementedNodeName = value
}
else if (name === 'data-no-elems') {
bemNode._noElems = true
}
// Else _domAttr
else if (name !== 'class') {
bemNode.domAttr(name, value)
}
}
if (stringToEval !== '') {
eval(stringToEval)
}
for (var key in bemNode._param) {
if (bemNode._param[key].__isStringifiedBemNode === true) {
bemNode._param[key] = eval(bemNode._param[key].string)
}
}
if (isInnerCall !== undefined) {
var parentDomNode = parentBemNode._domNode
parentBemNode._domNode = undefined
if (implementedNodeName !== '') {
Beast.node(implementedNodeName, {__context:parentBlock})
.appendTo(parentBemNode)
.implementWith(bemNode, true)
} else {
parentBemNode.append(bemNode)
if (parentBemNode._noElems === true) {
bemNode.parentBlock(parentBlock)
}
}
parentBemNode._domNode = parentDomNode
}
// Assign children
for (var i = 0, ii = domNode.childNodes.length, childNode; i < ii; i++) {
Beast.domInit(
domNode.childNodes[i],
true,
bemNode,
bemNode._noElems === true
? bemNode._parentBlock._parentNode._parentBlock
: bemNode._parentBlock
)
}
// Assign flags
bemNode._renderedOnce = true
bemNode._isExpanded = true
// Crosslink
bemNode._domNode = domNode
domNode.bemNode = bemNode
// Add event handlers
if (bemNode._domNodeEventHandlers !== undefined) {
for (var eventName in bemNode._domNodeEventHandlers) {
for (var i = 0, ii = bemNode._domNodeEventHandlers[eventName].length; i < ii; i++) {
bemNode.on(eventName, bemNode._domNodeEventHandlers[eventName][i], true, false, true)
}
}
}
if (bemNode._windowEventHandlers !== undefined) {
for (var eventName in bemNode._windowEventHandlers) {
for (var i = 0, ii = bemNode._windowEventHandlers[eventName].length; i < ii; i++) {
bemNode.onWin(eventName, bemNode._windowEventHandlers[eventName][i], true, false, true)
}
}
}
if (isInnerCall === undefined) {
function finalWalk (bemNode) {
for (var i = 0, ii = bemNode._children.length; i < ii; i++) {
if (bemNode._children[i] instanceof BemNode) {
finalWalk(bemNode._children[i])
}
}
for (var name in bemNode._mod) {
bemNode._callModHandlers(name, bemNode._mod[name])
}
bemNode._domInit()
bemNode._onAttach(true)
}
finalWalk(bemNode)
}
domNode.removeAttribute('data-event-handlers')
domNode.removeAttribute('data-window-event-handlers')
domNode.removeAttribute('data-mod-handlers')
domNode.removeAttribute('data-mod')
domNode.removeAttribute('data-param')
domNode.removeAttribute('data-after-dom-init-handlers')
domNode.removeAttribute('data-node-name')
domNode.removeAttribute('data-implemented-node-name')
domNode.removeAttribute('data-no-elems')
return bemNode
}
}
// TEXT_NODE
else if (domNode.nodeType === 3) {
parentBemNode.append(domNode.nodeValue)
return domNode.nodeValue
}
return false
}
/**
* Declaration standart fields:
* - inherits string|array Inherited declarations by selector
* - expand function Expand instructions
* - mod object Default modifiers
* - noElems object If block can have elements
* - param object Default parameters
* - domInit function DOM inititial instructions
* - on object Event handlers
* - onWin object Window event hadnlers
* - onMod object Modifier change actions
* - tag string DOM tag name
*
* @selector string 'block' or 'block__elem'
* @decl object
*/
Beast.decl = function (selector, decl) {
if (typeof selector === 'object') {
for (var key in selector) {
Beast.decl(key, selector[key])
}
return this
} else {
selector = selector.toLowerCase()
}
if (typeof decl.final === 'string') {
decl.final = [decl.final]
}
if (typeof decl.inherits === 'string') {
decl.inherits = [decl.inherits]
}
if (decl.inherits !== undefined) {
for (var i = 0, ii = decl.inherits.length; i < ii; i++) {
decl.inherits[i] = decl.inherits[i].toLowerCase()
if (decl.inherits[i].indexOf(' ') !== -1) {
var inherits = decl.inherits[i].split(' ')
decl.inherits.push(inherits[0], inherits)
decl.inherits.splice(i, 1)
ii--
}
}
}
if (Declaration[selector] !== undefined) {
extendDecl(decl, Declaration[selector])
}
Declaration[selector] = decl
return this
}
/**
* Extends declaration with another
* @decl object extending decl
* @extDecl object decl to extend with
*/
function extendDecl (decl, extDecl) {
for (var key in extDecl) {
if (decl[key] === undefined) {
decl[key] = extDecl[key]
}
else if (
typeof extDecl[key] === 'object' && !Array.isArray(extDecl[key])
) {
extendDecl(decl[key], extDecl[key])
}
}
}
/**
* Creates bemNode object
*
* @name string Node name
* @attr object Node attributes
* @content string|bemNode Last multiple argument
* @return BemNode
*/
Beast.node = function (name, attr) {
// No more Beast.decl() after the first Beast.node() call
if (!DeclarationFinished) {
DeclarationFinished = true
CompileDeclarations()
}
return new BemNode(
name, attr, Array.prototype.splice.call(arguments, 2)
)
}
/**
* Compiles declaration fileds to methods, makes inheritances
*/
function CompileDeclarations () {
function extend (obj, extObj) {
for (var key in extObj) {
if (
ReservedDeclarationProperies[key] === 2 ||
extObj.final !== undefined && extObj.final.indexOf(key) !== -1
) {
continue
}
if (obj[key] === undefined) {
obj[key] = typeof extObj[key] === 'object'
? cloneObject(extObj[key])
: extObj[key]
}
else if (
typeof extObj[key] === 'function' && obj[key]._inheritedDeclFunction === undefined
) {
(function (fn, inheritedFn, inheritedDecl) {
fn._inheritedDeclFunction = function () {
// Imitate inherited decl context for inner inherited() calls
var temp = this._decl
this._decl = inheritedDecl
inheritedFn.apply(this, arguments)
this._decl = temp
}
})(obj[key], extObj[key], extObj)
}
else if (
typeof extObj[key] === 'object' && !Array.isArray(extObj[key])
) {
extend(obj[key], extObj[key])
}
}
}
function compileCommonHandler (commonHandlerName, handlers, decl) {
if (handlers.length === 0) return
decl[commonHandlerName] = function () {
for (var i = 0, ii = handlers.length; i < ii; i++) {
handlers[i].call(this)
}
}
}
function inherit (declSelector, decl, inheritedDecls, final) {
for (var i = inheritedDecls.length-1; i >= 0; i--) {
if (typeof inheritedDecls[i] === 'string') {
var selector = inheritedDecls[i]
var inheritedDecl = Declaration[selector]
var prevFinal
decl.__flattenInherits.push(selector.toLowerCase())
if (inheritedDecl !== undefined) {
extend(decl, inheritedDecl)
if (inheritedDecl.finalMod === true) {
prevFinal = final
final = {selector:{}, mod:{}}
}
if (final !== undefined) {
final.selector[selector] = true
if (inheritedDecl.mod !== undefined) {
for (var modName in inheritedDecl.mod) {
final.mod[modName.toLowerCase()] = true
}
}
}
if (inheritedDecl.inherits !== undefined) {
inherit(declSelector, decl, inheritedDecl.inherits, final)
}
setFinal(decl, final)
if (inheritedDecl.finalMod === true) {
final = prevFinal
}
}
} else {
var inheritedElems = inheritedDecls[i]
var blockName = inheritedElems.shift()
for (var j = 0, jj = inheritedElems.length, aSelector, bSelector; j < jj; j++) {
aSelector = declSelector + '__' + inheritedElems[j]
bSelector = blockName + '__' + inheritedElems[j]
if (Declaration[aSelector] === undefined) {
Beast.decl(aSelector, {inherits: bSelector})
generatedDeclSelectors.push(aSelector)
}
}
}
}
}
function setFinal (decl, final) {
if (final !== undefined) {
if (decl.__finalMod === undefined) {
decl.__finalMod = {}
}
if (decl.__finalMod._selector === undefined) {
decl.__finalMod._selector = {}
}
for (var modName in final.mod) {
if (decl.__finalMod[modName] === undefined) {
decl.__finalMod[modName] = {}
for (var selector in final.selector) {
decl.__finalMod[modName][selector] = true
decl.__finalMod._selector[selector] = true
}
}
}
}
}
var generatedDeclSelectors = []
var forEachSelector = function (decl, selector) {
var final
if (decl.finalMod === true) {
final = {selector:{}, mod:{}}
final.selector[selector] = true
if (decl.mod !== undefined) {
for (var modName in decl.mod) {
final.mod[modName.toLowerCase()] = true
}
}
}
// Extend decl with inherited rules
if (decl.inherits !== undefined) {
decl.__flattenInherits = []
inherit(selector, decl, decl.inherits, final)
}
setFinal(decl, final)
// Compile expand rules to methods array
var expandHandlers = []
if (decl.implementWith !== undefined) {
expandHandlers.unshift(function () {
this.implementWith(
Beast.node(decl.implementWith, undefined, this.get())
)
})
}
if (decl.expand !== undefined) {
expandHandlers.unshift(decl.expand)
}
if (decl.tag !== undefined) {
expandHandlers.unshift(function () {
this.tag(decl.tag)
})
}
if (decl.noElems === true) {
expandHandlers.unshift(function () {
this.noElems()
})
}
if (decl.domAttr !== undefined) {
expandHandlers.unshift(function () {
this.domAttr(decl.domAttr)
})
}
if (decl.onMod !== undefined) {
expandHandlers.unshift(function () {
for (var modName in decl.onMod) {
for (var modValue in decl.onMod[modName]) {
this.onMod(modName, modValue, decl.onMod[modName][modValue], true)
}
}
})
}
if (decl.on !== undefined) {
expandHandlers.unshift(function () {
for (var events in decl.on) {
if (events === 'preventable') {
for (var preventableEvents in decl.on.preventable) {
this.on(preventableEvents, decl.on.preventable[preventableEvents], false, decl, true)
}
} else {
this.on(events, decl.on[events], false, decl)
}
}
})
}
if (decl.onWin !== undefined) {
expandHandlers.unshift(function () {
for (var events in decl.onWin) {
if (events === 'preventable') {
for (var preventableEvents in decl.onWin.preventable) {
this.onWin(preventableEvents, decl.onWin.preventable[preventableEvents], false, decl, true)
}
} else {
this.onWin(events, decl.onWin[events], false, decl)
}
}
})
}
// Compile domInit rules to methods array
var domInitHandlers = []
if (decl.domInit !== undefined) {
domInitHandlers.unshift(decl.domInit)
}
// Compile common handlers
compileCommonHandler('__commonExpand', expandHandlers, decl)
compileCommonHandler('__commonDomInit', domInitHandlers, decl)
// Extract user methods
decl.__userMethods = {}
for (var key in decl) {
if (ReservedDeclarationProperies[key] !== 1) {
decl.__userMethods[key] = decl[key]
}
}
}
for (var selector in Declaration) {
forEachSelector(Declaration[selector], selector)
}
if (generatedDeclSelectors.length !== 0) {
for (var i = 0, ii = generatedDeclSelectors.length; i < ii; i++) {
forEachSelector(
Declaration[generatedDeclSelectors[i]],
generatedDeclSelectors[i]
)
}
}
}
/**
* Set callback when Beast is ready
*
* @callback function Function to call
*/
Beast.onReady = function (callback) {
if (BeastIsReady) {
callback()
} else {
OnBeastReadyCallbacks.push(callback)
}
}
;(function () {
Beast.parseBML = function (string) {
js = ''
buffer = ''
char = ''
prevChar = ''
nextChar = ''
lastPush = ''
nodeAttrValueQuote = ''
openNodesNum = 0
openBracesNum = 0
embedStack = []
inBml = false
inBmlComment = false
inNode = false
inClosingNode = false
inNodeName = false
inNodeAttrName = false
inNodeAttrValue = false
inNodeTextContent = false
inSingleQuoteString = false
inDoubleQuoteString = false
inSingleLineComment = false
inMultiLineComment = false
inEmbed = false
for (var i = 0, ii = string.length; i < ii; i++) {
prevChar = i > 0 ? string[i - 1] : ''
nextChar = i < ii - 1 ? string[i + 1] : ''
char = string[i]
// Reset escape char
if (prevChar === '\\' && char === '\\') {
prevChar = ''
}
/*
* BML context
*/
if (inBml) {
// Node attr value
if (inNodeAttrValue) {
if (char === nodeAttrValueQuote && prevChar !== '\\') {
pushNodeAttrValue()
}
else if (char === '{' && prevChar !== '\\') {
pushNodeAttrValue(true)
pushEmbed()
}
else {
if ((char === '"' || char === "'") && prevChar !== '\\') {
buffer += '\\'
}
buffer += char
}
}
// Comment
else if (inBmlComment) {
if (prevChar === '-' && char === '>') {
inBmlComment = false
}
}
// Comment start
else if (char === '<' && nextChar === '!') {
inBmlComment = true
}
// Node text content
else if (inNodeTextContent) {
if (char === '<' && (nextChar === '/' || isLetter(nextChar))) {
pushNodeTextContent()
}
else if (char === '{' && prevChar !== '\\') {
pushNodeTextContent(true)
pushEmbed()
}
else {
if (char === '"') {
buffer += '\\' + char
}
else if (char === '\n') {
buffer += '\\n'
}
else {
buffer += char
}
}
}
// Break char: space, new line or tab
else if (isBreak(char)) {
if (inNodeName) {
pushNodeName()
inNodeAttrName = true
}
else if (inNodeAttrName) {
pushNodeAttrName()
}
if (inNode && !inNodeName && isLetter(nextChar)) {
inNodeAttrName = true
}
}
else if ((inNodeName || inNodeAttrName) && isLetterOrDigitOrDash(char)) {
buffer += char
// Node attr name start
if (!inNodeName && !inNodeAttrName) {
inNodeAttrName = true
}
}
// Node attr name end
else if (inNodeAttrName && prevChar === '=' && (char === '"' || char === "'")) {
pushNodeAttrName()
inNodeAttrValue = true
nodeAttrValueQuote = char
}
// Node opening start
else if (!inNode && prevChar === '<' && isLetter(char)) {
buffer += char
inNode = true
inNodeName = true
pushNodeOpen()
}
// Node closing start
else if (!inClosingNode && prevChar === '<' && char === '/' && isLetter(nextChar)) {
inClosingNode = true
inNodeName = true
}
// Single node closed
else if (inNode && prevChar === '/' && char === '>') {
if (inNodeName) {
pushNodeName()
}
if (inNodeAttrName) {
pushNodeAttrName()
}
pushClosingNode()
}
// Node opening end
else if (inNode && char === '>') {
if (inNodeName) {
pushNodeName()
}
if (inNodeAttrName) {
pushNodeAttrName()
}
pushOpeningNodeClose()
inNodeTextContent = true
}
// Node closing end
else if (char === '>' && inClosingNode) {
pushClosingNode()
}
// Skip char for future
else if (
!(inNode && !inNodeAttrValue && char === '/' && nextChar === '>') &&
!(inNodeAttrName && char === '=' && nextChar !== '=')
) {
// Unexpected char
throw (
'BML syntax error: Unexpected token "' + char + '": \n' +
string.substring(0, i+1).split('\n').slice(-5).join('\n') + '\n' +
js.slice(-100)
)
}
}
/*
* JS context
*/
else {
// New line
if (char === '\n') {
if (inSingleLineComment) {
inSingleLineComment = false
}
}
// Single line comment
else if (prevChar === '/' && char === '/' && !inSingleQuoteString && !inDoubleQuoteString) {